Additional Resources - Red Hat LINUX 7.2 Reference Manual

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An omitted semi-colon or unclosed ellipse section will cause named to refuse to start.
• Remember to place dots ( . ) in zone files after all FQDNs and omit them on hostnames.
The dot symbolizes that the name given is full and complete. If the dot is omitted, then named
will place the name of the zone or the $ORIGIN value after the name to complete it.
• If you are having problems with your firewall blocking connections from your named to other
nameservers, you should manually tell named to use port 53 for upstream queries.
BIND version 9 uses random ports above 1024 query other nameservers to resolve names, just like
other DNS clients do, connecting to the remote nameserver's port 53. Some firewalls, however,
expect nameservers to communicate with each other with both systems using port 53. You can
place the following line in the options statement to force named to send queries from port 53:
query-source address * port 53;

14.6 Additional Resources

The following sources of information will provide additional background concerning the utilization
of BIND.
14.6.1 Installed Documentation
• BIND features a full-range of installed documentation covering many different topics, each placed
in its own subject directory:
– /usr/share/doc/bind- <version-number> — Contains a README file with a list
of the most recent features.
– /usr/share/doc/bind- <version-number> /arm — Contains HTML and SGML
of the BIND 9 Administrator Reference Manual, which details BIND resource requirements,
how to configure different types of nameservers, perform load balancing, and other advanced
topics. For most new users of BIND, this is the best place to start.
– /usr/share/doc/bind- <version-number> /draft — Contains assorted techni-
cal documents that look at issues related to DNS service and some methods proposed to address
them.
– /usr/share/doc/bind- <version-number> /misc — Contains documents
designed to address specific advanced issues. Users of BIND version 8 should consult
the migration document for specific changes they must make when moving to BIND
9. The options file lists all of the options implemented in BIND 9 that are used in
/etc/named.conf.
– /usr/share/doc/bind- <version-number> /rfc — Every RFC document related
to BIND is conveniently placed in this directory.
Chapter 14:Berkeley Internet Name Domain (BIND)